Src/Newtonsoft.Json/Serialization/JsonArrayContract.cs

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#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using Newtonsoft.Json.Utilities;
using System.Collections;

namespace Newtonsoft.Json.Serialization
{
  /// <summary>
  /// Contract details for a <see cref="Type"/> used by the <see cref="JsonSerializer"/>.
  /// </summary>
  public class JsonArrayContract : JsonContract
  {
    internal Type CollectionItemType { get; private set; }
    internal JsonContract CollectionItemContract { get; set; }

    private readonly bool _isCollectionItemTypeNullableType;
    private readonly Type _genericCollectionDefinitionType;
    private Type _genericWrapperType;
    private MethodCall<object, object> _genericWrapperCreator;

    /// <summary>
    /// Initializes a new instance of the <see cref="JsonArrayContract"/> class.
    /// </summary>
    /// <param name="underlyingType">The underlying type for the contract.</param>
    public JsonArrayContract(Type underlyingType)
      : base(underlyingType)
    {
      ContractType = JsonContractType.Array;
      
      if (ReflectionUtils.ImplementsGenericDefinition(underlyingType, typeof(ICollection<>), out _genericCollectionDefinitionType))
      {
        CollectionItemType = _genericCollectionDefinitionType.GetGenericArguments()[0];
      }